We present a case of 55-year old man with a complex form of ischaemic heart disease. Except a significant narrowing of the circumflex coronary branch, a spasm of several branches of left coronary artery was found. The percutaneous balloon angioplasty and a modification of pharmacological treatment (introduction of nitrates and Ca-blockers) was effective. Clinical aspects and possible mechanisms of coronary artery spasm are discussed.